diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 994ef36c5f60e4a4ff86d75c3ee70fdc86b5fb20..58730872f7e5e842c4d16cc42b2f5ccf8ae9f754 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -5808,6 +5808,7 @@ static void do_refine_retval_range(struct bpf_reg_state *regs, int ret_type,
 
 	if (ret_type != RET_INTEGER ||
 	    (func_id != BPF_FUNC_get_stack &&
+	     func_id != BPF_FUNC_get_task_stack &&
 	     func_id != BPF_FUNC_probe_read_str &&
 	     func_id != BPF_FUNC_probe_read_kernel_str &&
 	     func_id != BPF_FUNC_probe_read_user_str))